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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Force feedback support for Mayflash game controller adapters.4 *5 * These devices are manufactured by Mayflash but identify themselves6 * using the vendor ID of DragonRise Inc.7 *8 * Tested with:9 * 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter"10 * 0079:1803 "DragonRise Inc. Mayflash Wireless Sensor DolphinBar"11 * 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter"12 * 0079:1844 "DragonRise Inc. Mayflash GameCube Game Controller Adapter (v04)"13 *14 * The following adapters probably work too, but need to be tested:15 * 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter"16 *17 * Copyright (c) 2016-2017 Marcel Hasler <mahasler@gmail.com>18 */19 20/*21 */22 23#include <linux/input.h>24#include <linux/slab.h>25#include <linux/hid.h>26#include <linux/module.h>27 28#include "hid-ids.h"29 30struct mf_device {31 struct hid_report *report;32};33 34static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect)35{36 struct hid_device *hid = input_get_drvdata(dev);37 struct mf_device *mf = data;38 int strong, weak;39 40 strong = effect->u.rumble.strong_magnitude;41 weak = effect->u.rumble.weak_magnitude;42 43 dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak);44 45 strong = strong * 0xff / 0xffff;46 weak = weak * 0xff / 0xffff;47 48 dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak);49 50 mf->report->field[0]->value[0] = weak;51 mf->report->field[0]->value[1] = strong;52 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);53 54 return 0;55}56 57static int mf_init(struct hid_device *hid)58{59 struct mf_device *mf;60 61 struct list_head *report_list =62 &hid->report_enum[HID_OUTPUT_REPORT].report_list;63 64 struct list_head *report_ptr;65 struct hid_report *report;66 67 struct list_head *input_ptr = &hid->inputs;68 struct hid_input *input;69 70 struct input_dev *dev;71 72 int error;73 74 /* Setup each of the four inputs */75 list_for_each(report_ptr, report_list) {76 report = list_entry(report_ptr, struct hid_report, list);77 78 if (report->maxfield < 1 || report->field[0]->report_count < 2) {79 hid_err(hid, "Invalid report, this should never happen!\n");80 return -ENODEV;81 }82 83 if (list_is_last(input_ptr, &hid->inputs)) {84 hid_err(hid, "Missing input, this should never happen!\n");85 return -ENODEV;86 }87 88 input_ptr = input_ptr->next;89 input = list_entry(input_ptr, struct hid_input, list);90 91 mf = kzalloc(sizeof(struct mf_device), GFP_KERNEL);92 if (!mf)93 return -ENOMEM;94 95 dev = input->input;96 set_bit(FF_RUMBLE, dev->ffbit);97 98 error = input_ff_create_memless(dev, mf, mf_play);99 if (error) {100 kfree(mf);101 return error;102 }103 104 mf->report = report;105 mf->report->field[0]->value[0] = 0x00;106 mf->report->field[0]->value[1] = 0x00;107 hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);108 }109 110 hid_info(hid, "Force feedback for HJZ Mayflash game controller "111 "adapters by Marcel Hasler <mahasler@gmail.com>\n");112 113 return 0;114}115 116static int mf_probe(struct hid_device *hid, const struct hid_device_id *id)117{118 int error;119 120 dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n");121 122 /* Apply quirks as needed */123 hid->quirks |= id->driver_data;124 125 error = hid_parse(hid);126 if (error) {127 hid_err(hid, "HID parse failed.\n");128 return error;129 }130 131 error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);132 if (error) {133 hid_err(hid, "HID hw start failed\n");134 return error;135 }136 137 error = mf_init(hid);138 if (error) {139 hid_err(hid, "Force feedback init failed.\n");140 hid_hw_stop(hid);141 return error;142 }143 144 return 0;145}146 147static const struct hid_device_id mf_devices[] = {148 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3),149 .driver_data = HID_QUIRK_MULTI_INPUT },150 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR),151 .driver_data = HID_QUIRK_MULTI_INPUT },152 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1),153 .driver_data = HID_QUIRK_MULTI_INPUT },154 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2),155 .driver_data = 0 }, /* No quirk required */156 { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE3),157 .driver_data = HID_QUIRK_MULTI_INPUT },158 { }159};160MODULE_DEVICE_TABLE(hid, mf_devices);161 162static struct hid_driver mf_driver = {163 .name = "hid_mf",164 .id_table = mf_devices,165 .probe = mf_probe,166};167module_hid_driver(mf_driver);168 169MODULE_DESCRIPTION("Force feedback support for Mayflash game controller adapters.");170MODULE_LICENSE("GPL");171